Table 1.

Sex, patient category, and laboratory distribution.

	Frequency	Percentage
Gender
Male	178	43.2
Female	234	56.8
Patient category
Child	57	13.8
Adult	355	86.2
Study location
National Blood Transfusion and Research Center	35	8.5
Al-Medina medical laboratories	234	56.8
Babel Hospital	41	10.0
Aden German International Hospital	102	24.8